Riverside man dies after being crushed by cows at Ontario dairy farm

June 17, 2013 12:00:00 AM PDT

ONTARIO, Calif. --

A Riverside man is dead after being crushed by cows at a dairy farm in Ontario over the weekend.

The San Bernardino County Coroner's office says Winston Perez, 28, was transported to Arrowhead Regional Medical Center in Colton where he underwent surgery for severe internal injuries, but died at 4:36 p.m. Saturday.

Investigators say Perez was moving the cows into a stall in the morning when he got caught in between a gate and a fence and was crushed by the animals. Sheriff's dispatchers say they received a call about the accident shortly after 5 a.m.

Authorities have not released the name of the farm or other details on the circumstances of Perez's death.

The Associated Press and City News Service contributed to this report.